Thursday, December13, 2018 L-36.com


Marine Weather and Tides
Imperial Beach, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:40AMSunset 4:45PM Thursday December 13, 2018 12:15 PM PST (20:15 UTC) Moonrise 12:19PMMoonset 11:34PM Illumination 37% Phase: Waxing Crescent; Moon at 6 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 208 Am Pst Thu Dec 13 2018
Today..Wind ne to 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 13 seconds.
Tonight..Wind E to 10 kt...becoming se after midnight. Wind waves 2 ft or less. SWell W 1 to 3 ft at 16 seconds.
Fri..Wind variable less than 10 kt...becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 3 ft at 16 seconds.
Fri night..Wind variable less than 10 kt...becoming nw 10 kt after midnight. Wind waves 2 ft or less. SWell W 1 to 3 ft at 16 seconds.
Sat..Wind variable less than 10 kt...becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 3 ft at 16 seconds.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft.
Sun..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Sun night..Wind variable less than 10 kt...becoming nw 10 kt after midnight. Wind waves 2 ft or less. SWell W 2 to 4 ft.
Mon..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 5 ft.
Mon night..Wind nw 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 4 to 7 ft.
PZZ700 208 Am Pst Thu Dec 13 2018
Synopsis for the far southern california coast.. At 1 am, a 1038 mb high was over northeast nevada and a 1022 mb low was 100 nm west of san diego. Offshore flow today will turn neutral tonight. Weak onshore flow in the afternoons and evenings will alternate with weak offshore flow nights and mornings. Stronger onshore flow is expected Monday, along with a large long-period swell.


7 Day Forecast for Marine Location Near Imperial Beach, CA
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location: 32.53, -117.14     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 131731
afdsgx
area forecast discussion
national weather service san diego ca
930 am pst Thu dec 13 2018

Synopsis
Warmer west of the mountains today with gusty santa ana winds near
and below the coastal slopes of the mountains and below passes and
canyons. Onshore flow will bring cooling for coastal and valley
areas on Friday, with more mid and high clouds moving across the
area. A little warmer this weekend as a weak trough moves inland.

There is a small chance for some light precipitation on Monday,
then dry and warmer into midweek as high pressure builds aloft and
winds turn back offshore.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

skies were clear over socal at 9 am pst. The sfc pressure gradient
from SW nv to ksan was around 9 mbs. This was supporting NE winds 20
mph with gusts to 30-35 mph along the coastal foothills and through
the passes. No changes to the forecast at this time.

From previous discussion...

there will be high pressure aloft along the west coast today with
surface high pressure over the great basin. Satellite imagery
shows a few patches of stratus early this morning, mostly over the
coastal waters, with a few high clouds as well. The surface high
pressure over the great basin will bring periods of gusty east to
northeast winds near the coastal slopes of the mountains and below
passes and canyons. The mountains and deserts may be slightly
cooler today than on Wednesday with several degrees of warming
west of the mountains with greatest warming for inland coastal
areas into the western valleys.

For Friday, a trough of low pressure moving inland to the north
will bring a return of onshore flow which will spread cooling into
coastal and valley areas. That trough of low pressure will also
draw mid and high level subtropical moisture northward across the
area with more clouds on Friday into Friday night. Onshore flow
will be weaker for the weekend with slightly warmer high
temperatures for most areas.

For Monday, the range of model solutions for a trough of low
pressure moving inland across california has not changed much from
the past two days with the solutions ranging from a less
amplified trough of low pressure moving inland faster to a little
slower moving low pressure system that briefly closes off near the
california coast as it moves inland. The faster solutions would
be mostly dry while the slower moving more closed solutions would
bring more widespread precipitation and would more effectively
tap a subtropical moisture plume directed into southern california
ahead of the low pressure system. The current forecast remains
with an intermediate solution that would have a weakening front
moving across southern california with some light precipitation
possible for portions of southwest california.

For Tuesday and Wednesday, high pressure aloft will strengthen
along the west coast with surface high pressure over the great
basin. This will bring a warming trend with periods of gusty
northeast to east winds near and below the coastal slopes of the
mountains and below passes and canyons.

Aviation
131630z... Clear skies with unrestricted vis will prevail through
Friday. Areas of ne-e surface wind gusts of 25-35 kt are expected
mainly in foothills and below passes through 21z today, then mostly
15-25 kt through Friday morning.

Marine
No hazardous marine weather is expected through Sunday. A large wnw
swell Monday and Tuesday will likely generate seas of 10-13 feet,
highest in the outer coastal waters (beyond 30 nm), though the
period will be quite long, 18-20 seconds.

Beaches
A large long-period (18-20 seconds) swell from the west-northwest is
currently projected to arrive Monday and continue through Tuesday.

The direction from 290 degrees will limit the effects somewhat,
though surf of 6-12 feet is still quite possible, especially in
southern san diego county. Stay tuned in coming days to any hazard
products as the swell approaches.

Skywarn
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public... 10 17
aviation marine beaches... Maxwell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 3 mi91 min E 2.9 78°F 1023 hPa30°F
46235 3 mi46 min 62°F3 ft
SDBC1 - 9410170 - San Diego, CA 13 mi40 min 1022 hPa
46232 - Point Loma South, CA (191) 15 mi46 min 65°F4 ft
LJPC1 - La Jolla, CA (073) 24 mi56 min NNW 1.9 3 ft
LJAC1 - 9410230 - La Jolla, CA 24 mi40 min N 1 G 1.9 64°F 63°F1022.4 hPa
46254 24 mi46 min 63°F3 ft
46258 25 mi46 min 64°F3 ft
46225 - Torrey Pines Outer, CA (100) 31 mi46 min 64°F3 ft
46224 - Oceanside Offshore, CA (045) 48 mi46 min 64°F2 ft
46086 - San Clemente Basin 48 mi26 min ENE 5.8 G 5.8 62°F 64°F5 ft1022.2 hPa (-0.8)

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Imperial Beach Naval Outlying Field - Ream Field, CA4 mi20 minWSW 1110.00 miFair67°F57°F71%1022 hPa
San Diego, Brown Field Municipal Airport, CA9 mi23 minSE 1310.00 miFair79°F24°F13%1021.4 hPa
San Diego, North Island, Naval Air Station, CA12 mi84 minN 010.00 miFair72°F42°F34%1022.5 hPa
San Diego, San Diego International-Lindbergh Field, CA14 mi25 minW 310.00 miFair75°F30°F19%1022.4 hPa
San Diego, Montgomery Field, CA21 mi23 minN 010.00 miFair76°F25°F15%1021.8 hPa
Gillespie Field Airport, CA23 mi89 minN 010.00 miClear64°F46°F52%1023.4 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA24 mi81 minVar 310.00 miFair79°F30°F17%1022.3 hPa

Wind History from NRS (wind in knots)
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Last 24hrSW9SW10SW12S7SW7CalmE3NE3CalmE5E5E5NE5NE4E8E7NE6E7E9E8E7E7E10SW11
1 day agoW8W85SW6W5CalmCalmCalmCalmE3E4E3SE5E3NE5E4E5E5E7E4SE53SW8SW8
2 days agoW7CalmNW4W7NW3CalmCalmCalmE3CalmCalmCalmSE3E4E5CalmE6E4E6E7E44SW9SW11

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Thu -- 02:23 AM PST     3.97 feet High Tide
Thu -- 06:38 AM PST     3.19 feet Low Tide
Thu -- 06:41 AM PST     Sunrise
Thu -- 11:19 AM PST     Moonrise
Thu -- 12:12 PM PST     4.74 feet High Tide
Thu -- 04:43 PM PST     Sunset
Thu -- 08:01 PM PST     0.71 feet Low Tide
Thu -- 10:33 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.23.743.93.73.43.23.23.43.74.24.54.74.74.33.72.92.11.40.90.70.91.42

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Thu -- 02:36 AM PST     -0.00 knots Slack
Thu -- 04:40 AM PST     -0.39 knots Max Ebb
Thu -- 06:42 AM PST     Sunrise
Thu -- 06:58 AM PST     0.00 knots Slack
Thu -- 09:36 AM PST     0.38 knots Max Flood
Thu -- 11:19 AM PST     Moonrise
Thu -- 12:21 PM PST     -0.00 knots Slack
Thu -- 04:43 PM PST     -1.23 knots Max Ebb
Thu -- 04:43 PM PST     Sunset
Thu -- 08:30 PM PST     0.00 knots Slack
Thu -- 10:33 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.50.2-0.1-0.3-0.4-0.200.20.40.40.30.1-0.2-0.5-0.9-1.2-1.2-1-0.7-0.20.20.50.7

Weather Map and Satellite Images
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wmap_P
GOES Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (15,3,4,5)
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Ground Weather Radar Station San Diego, CA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.